Molder&#39;s flask.



E. T. MoHUGH.

MOLDEB'S FLASK.

APPLICATION FILED 16.29, 1910.

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APPLICATION IILED AUG.29, 1910.

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A TTORNEY.

IVITNESSES:

. angled fportions arranged to EDWARD '1. MOHUGH, HOLYOKE, MASSACHUSETTS.

MOLDERS' FLASK.

Specification of Letters Patent.

Patented Nov. 8, 1910.

Application filed August 29, 1910. Serial No. 579,570.

To all whom it may concern:

Be it known that I, EDWARD T. MGHUGH, a citizen of the United States of America, and resident of Holyoke, in the county of Hampden and State of Massachusetts, have invented certain new and useful Improvements in Molders Flasks, of which the following is a full, clear, and exact description.

This invention relates to improvements in molders flasks of the kind in which the rectangular frame or flask com rises two right fbrm the boundaries o a rectan le and which portions are separable at their diagonally opposite corners whereby the said portions may have spread or expanded relations as desirable when the flask is to be removed from the sand mold produced therein,-it being understood that in flasks of the general character above referred to the separable portions are provided with locking or latching appliances at corners of the flask at which the separation takes place.

The object of this invention is to provide means at the diagonally opposite corners of the flask at which the separation of the right angular portions is acquired, which is of such improved construction as to permit most quickly contraction of the members and the holding of them locked in their contracted relations, and as occasion may require the release of the contracting and looking means together with automatic means, constituted by sprin for forcing the right angular portions 0 the frame or flask to separated or expanded relations in an appropriate degree.

The invention is fully described in conjunction with the accompanying drawings and is defined in the claims.

In the drawings':Figure 1 is a plan view of the cope section of a flask, with some portions in horizontal section,on which the present improvements are provided, the same being understood as in its position above the nowel r drag, this view showing the separable parts of the cope as contracted and locked in such condition. Fig. 2 is a view similar to Fi 1 but showing the parts of the cope fla as unlocked and expanded. Fig. 3 is an elevation as seen at the right hand side of Fig. 1. Fig. 4 is a cross section on line 4-4, Fig. 1. Fig. 5 is a vertical sectionalview on a larger scale as taken on line stituted by two right angular rigidly connected members a a having arrangements to form the boundaries of a rectangle; and the members a, a have at their free ends lugs b and b which extendobliquely outwardly, in suitable roximity with each other,these airs of ugs b, b having their locations at t e diagonally o posite corner of the flask which is made 0 the separable right angular ortions as shown.

The oblique y extendin 111 Z) of each member a carries a rigid y a 'ed stud d which projects perpendicularly to, and beyond, the inner face of the lug b and transversely relatively to and beyond the companion lug 12 In the present instance and in the preferred construction of the corner devices, the oblique lug b has a perforation or aperture 6 t-herethrough, through which the extended portion of the stud d protrudes.

C represents a lever rovided cam ivotally connected at f to t e extremity 0 each stud d which has its location beyond and outside of each oblique In I).

g 9 represent spiral sprlngs which loosely encircle'the studs 03 and have their locations between, and are in compression for reaction against, the pairs of oblique lugs b, b so that when the parts are permltted for separation, by being left unrestrained at their diagonally o posite corners, the ri ht angled portions wil be thrown outwar ly or expanded, as represented in Fig. 2, to leave the flask free and clear from the sand mold which had been formed therein.

When the lever extensions of the cams C C are swung from their open positions,F1g. 2,to their inwardly closed positions,F1gs. 1 and 5,the cams by their im ingements against the outer faces of the a acent lugs 6 b produce drafts on the studs (1 d whereby they are drawn farther through the apertures e in the said lugs b and whereby in a measure the lugs b? are forced toward the lugs Z) for closing the separable right angular portions of the flask. I

In the closing movements of the parts the forces exerted thereon through the cams and studs are equalized or distributed so that the movements of the one right angular portion of the flask is mutual in respect to the movements of the other angular portion.

One of the lugs of each corner pair, as represented in Figs. 3 and 5, carries at its upper part a downwardly slantin guard wall j which extends in an over ianging manner across and over the top of the other corner lug and especially across and for covering the space between the two lugs b, b in which the spring g has its place of occupancy,the provision of this guard wall being eflicient in the action of the flask appurtenances for reventing sand from entering between the ugs to impair or obstruct the movements of the working parts of the contracting and locking, and expanding means.

As particularly represented inthe drawings, each combined cam C and handle lev'er extension is so constructed that the inner portion of the device is bifurcated whereby in effect the "cam is one of upper and lower leaves, the same being joined at the heel by the inner end portion of the handle lever; and by this provision the extremity of each stud (Z which is connected to the cam ended lever by the pivot has itslocation between the two leaves of the cam and in the centralized plane of the lever, while a comparatively wide cam bearing a ainst the outer face of the lug b is acquire ,all to the end of an always efiicient and satisfactory operation of thecontracting and confining device. The drag portion B of the flask has at opposite sides the usual brackets on which support the vertical outstanding guiding dowels 0 and the cope A has the opposite outwardly extending guide plates 8 through apertures in which the dowels have engagements for the guidance of the one flask in relation to the other; but it will be noticed in the present instance that the apertures 25 in the ide plates 8 of the cope are arranged 1n oblique lines corresponding to the lines of inclination of thestuds d, and by v the provisions of these coacting dowels and peculiarly apertured guide plates the flask is rendered complete and satisfactory for its working purposes.

While the described improvements are available on the cope'section of the flask, and has been most extensively used by me on this section, they areequall well applicable onthe drag section; and t e utilization of the improved devices is not restricted of flask so long as the same has the boun aries thereof constituted by two right angled portions which are separable and have their arrangements such as to form a rectangular framelike structure.

1. A flask comprising a pair of right angled portions arranged to form the boundaries of a rectangular flask frame, the adj acent ends of members of the angular portions having obliquely outwardly extending lugs, a studcarried by one of each adjacent pair of lugs and projecting transversely of, and beyond the other lug, and having a lever-provided cam pivotally connected thereto, whereby by the operations of the cams at the diagonally opposite corners the separable portions of the flask may be brought to contracted relations or released to spread from each other, and springs for automatically spreading the angular portions of the flask when released therefor by the cams.

2. A flask comprising a pair of right angled portions arranged to form the bound aries of a rectangle, the adjacent ends of members of the angular portions having obliquely outwardly extending lugs, one of each having an aperture therethrough, while the other carries a stud projecting through and beyond such aperture, and having a le ver-provided cam pivotally connected thereto, and arranged for impingement against the surface of the apertured lug, and springs in compression between the obliquely extending lugs of both pairs.

A flask comprising a pair of right angled portions arranged to form the bound aries of a rectangular flask frame, the adjacent ends of members of the angular portions having obliquely outwardly extending lugs, a stud carried by one of each adjacent pair of lugs, projecting transversely of, and

beyond the other lug, and having a leverprovided cam pivotally connected thereto, springs between the pairs of corner lugs, exerting a separating pressure thereto, and a guard Wall carried at the upper part of one lug of each pair and overhanging the other lug.

4. A flask comprisinga pair of right angled portions arranged to form the boundaries of a rectangle, the adjacent ends of members of the angular portions having ob- .liquely outwardly extending lugs, a stud carsite sides vertical guiding dowels and one of said flask sections comprising a pair of right angled portions having rectangular arrangement, the adjacent ends of their members having obliquely outwardly extending lu s, one of each having an aperture theret llOllgh while the other carries a stud projecting through and beyond such aperture lind having a lever provided cam pivotally connected thereto arranged for coaction with the adjacent oblique lug, springs said guide plates having the the lengths of Stlld studs.

engths thereof arranged in obli ue lines corresponding to 15 Signed by me at Springfield, Mass, in

presence of two subscribing Witnesses:

G. R. DRISCOLL, WM. S. Bnnwws.

witnesses. McI-IUGH. 

